Device and method for testing response time and indication error of gas analyzer

Abstract

The invention relates to a response time and indication error testing device for a gas analyzer. The response time and indication error testing device comprises a power supply module, a programmable touch screen, a test gas input module, a test gas output module and a device shell, the power supply module is in electric signal coupling with the programmable touch screen; a switching value signal output module of the programmable touch screen is in electric signal coupling with the test gas input module; an analog quantity signal input module of the programmable touch screen is in electric signal coupling with the test gas output module through a wire; and the analog quantity output signal terminals of the gas analyzer to be tested are respectively connected with the corresponding analog quantity signal input channels through wires for electric signal coupling. The invention further relates to a testing method using the testing device for the response time and the indication error of the gas analyzer. According to the invention, the problem that timing and calculation are manually executed by testers during testing is solved; and the labor intensity of testers is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gas analyzer testing, and in particular to a gas analyzer response time and indication error testing device and a testing method. Background Art

[0002] A gas analyzer is the core device in a continuous flue gas emissions monitoring system, continuously measuring the concentrations of pollutant gases emitted by process flows. The analyzer's response time directly quantifies the real-time nature of its measurement data, while its indication error directly quantifies the accuracy of its measurement data.

[0003] According to the Technical Specification for Continuous Monitoring of Flue Gas (SO2, NOX, Particulate Matter) Emissions from Stationary Pollution Sources (HJ75-2017), the extractive CEMS for gaseous pollutants must undergo a full system calibration at least once every three months, which includes testing the CEMS system's indication error and response time. According to the specification, the system indication error test requires that standard gases be introduced into the CEMS system's entire test pipeline in the order of zero gas, high-concentration standard gas, zero gas, medium-concentration standard gas, zero gas, and low-concentration standard gas. After the concentration displayed on the gas analyzer stabilizes, the measurement results are read. The measurement is repeated three times, and the average value is taken to calculate the indication error according to the relevant formula. The system response time test requires that the range calibration gas be introduced into the entire test pipeline of the CEMS system according to the sampling flow rate set by the system. At the same time, a stopwatch is started to time the gas analyzer indication when it starts to jump, and the gas pipeline transmission time T1 is recorded and calculated; the response time T2 when the gas analyzer indication rises to 90% of the nominal value of the range calibration gas is continued to be observed; the response time is the sum of T1 and T2, and the measurement is repeated three times, and the response time is the average of the three measurements.

[0004] The defects of the prior art are:

[0005] The existing testing process requires repeated replacement of standard gases and related observation and calculation, which results in a long testing time for the entire testing process. At the same time, the timing, data recording and calculation work involved are numerous and labor-intensive. Summary of the Invention

[0006] In response to the above-mentioned problems, the present invention provides a gas analyzer response time and indication error testing device and testing method, which aims to solve the problem that the standard gas switching and the observation, timing and calculation of related test values ​​in the test process of the CEMS system indication error and response time rely on manual execution by the tester; through program design and calculation, the test process of the CEMS system indication error and response time is automatically executed, reducing the labor intensity of the tester.

[0007] In order to solve the above problems, the technical solution provided by the present invention is:

[0008] A gas analyzer response time and indication error testing device includes a power supply module, a programmable touch screen, a test gas input module, a test gas output module, and a device housing, wherein:

[0009] The power supply module is electrically signal coupled to the programmable touch screen; the switch signal output module of the programmable touch screen is electrically signal coupled to the test gas input module, and the switch signal output module is used to control the test gas input module to switch standard gases of different specifications; the analog signal input module of the programmable touch screen is electrically signal coupled to the test gas output module through a wire; the analog signal input module is electrically signal coupled to the analog signal input terminal block provided on the device housing through a wire; the analog signal input terminal block is electrically signal coupled to the analog signal input channel provided on the outside of the device housing; the analog output signal terminals of the gas analyzer to be tested are respectively connected to the corresponding analog signal input channel electrical signal couplings through wires.

[0010] Preferably, the power module includes a battery, an external power interface, and a switch, wherein: the battery is used to power the test device; the external power interface is coupled to the battery electrical signal and is used to provide an external power charging interface for the test device; the programmable touch screen is coupled to the battery electrical signal through the switch, and the switch is used to control the power on and off of the programmable touch screen.

[0011] Preferably, the test gas input module includes a first test gas input branch, a second test gas input branch, a third test gas input branch, and a fourth test gas input branch; the first test gas input branch, the second test gas input branch, the third test gas input branch, and the fourth test gas input branch are independently connected in parallel to constitute a test gas input channel of the test device.

[0012] Preferably, the first test gas input branch includes a first connector, a first air pipe, a first solenoid valve, and a first one-way valve arranged in series; the second test gas input branch includes a second connector, a second air pipe, a second solenoid valve, and a second one-way valve arranged in series; the third test gas input branch includes a third connector, a third air pipe, a third solenoid valve, and a third one-way valve arranged in series; the fourth test gas input branch includes a fourth connector, a fourth air pipe, a fourth solenoid valve, and a fourth one-way valve arranged in series; the switch signal output module is electrically coupled to the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve through wires, and controls the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve to switch standard gases of different specifications through the switch; the first one-way valve, the second one-way valve, the third one-way valve, and the fourth one-way valve are respectively used to control the one-way flow of the test gas to prevent the test gases from being mixed and diluted with each other.

[0013] Preferably, the test gas output module includes a test gas main gas pipe, a gas flow sensor, an output gas pipe, an output connector, and a three-way connector, wherein: the first test gas input branch pipe, the second test gas input branch pipe, the third test gas input branch pipe, and the fourth test gas input branch pipe are connected in parallel to the test gas main gas pipe through the three three-way connectors; the test gas main gas pipe, the gas flow sensor, the output gas pipe, and the output connector are arranged in series to constitute a test gas output channel of the test device; the gas flow sensor is electrically coupled to the analog signal input terminal block, and is used to monitor the test gas flow and input the analog signal into the programmable touch screen.

[0014] Preferably, the external power interface, the switch, the programmable touch screen, the analog signal input channel, the first connector, the second connector, the third connector, the fourth connector, and the output connector are respectively fixedly installed at corresponding positions on the outside of the device casing; the battery, the first air pipe, the first solenoid valve, the first one-way valve, the second air pipe, the second solenoid valve, the second one-way valve, the third air pipe, the third solenoid valve, the third one-way valve, the fourth air pipe, the fourth solenoid valve, the fourth one-way valve, the test gas main air pipe, the three-way connector, the gas flow sensor, and the output air pipe are respectively fixedly installed at corresponding positions inside the device casing.

[0015] Preferably, the testing device also includes an external input terminal and an external display terminal that are matched therewith; the external input terminal is electrically coupled to the programmable touch screen and is used to input relevant parameter settings and operations of the test task; the external display terminal is electrically coupled to the programmable touch screen and is used to display the test process and test results of the testing device.

[0016] A testing method utilizing the gas analyzer response time and indication error testing device, wherein the testing device is provided with an application configuration project, and the application configuration project pre-stores a test task operation model; the test task operation model includes an analog switch output signal operation model, an analog input signal reading model, a response time timing operation model, and an indication error test result operation model; the analog switch output signal operation model is used to control the opening or closing of the first solenoid valve, the second solenoid valve, the third solenoid valve, and the fourth solenoid valve through the switch signal output module according to a preset control rule; the analog input signal reading model is used to read the detection values ​​of the gas analyzer to be tested and the gas flow sensor; the response time timing operation model is used to start the timer group built into the programmable touch screen and time according to a preset rule; the indication error test result operation model is used to calculate the indication error of the test gas according to a preset algorithm.

[0017] Preferably, the testing method specifically comprises the following steps:

[0018] S01. Input the standard gas nominal value information through the parameter setting interface of the programmable touch screen;

[0019] S02. After turning on the start test switch on the programmable touch screen, the programmable touch screen controls the opening and closing of the corresponding solenoid valve according to the preset program steps, thereby connecting the corresponding test gas input branch and executing the test gas input branch switching program and response time timing program according to the system settings;

[0020] S03. The response time timing program begins with the opening command of the solenoid valve for the test gas input branch for range calibration, and ends when the analog input signal of the analyzer's test component value on the programmable touch screen exceeds 2.5% of the analyzer's range input value. The timing data for this period is calculated as the sample gas pipeline transmission time, entered into a register, and stored in a database.

[0021] S04. The response time timing program begins when the analog input signal of the analyzer component detected on the programmable touch screen exceeds 2.5% of the analyzer's detection range input value and ends when the analog input signal of the analyzer component detected on the programmable touch screen exceeds 90% of the analyzer's detection range input value. The timing data for this period is recorded as the instrument response time, entered into the register, and stored in the database.

[0022] S05. The test gas input branch switching procedure starts with the start test switch being turned on, and the first solenoid valve of the first test gas input branch corresponding to the zero gas is opened;

[0023] S06. After the first solenoid valve is opened in step S05, the first solenoid valve is closed after a delay of 300 seconds;

[0024] S07. After the first solenoid valve is closed in step S06, a delay of 10 seconds is maintained. Then, the second solenoid valve of the second test gas input branch corresponding to the high-concentration gas is opened. The second solenoid valve is closed after the analog input signal of the test value of the analyzer detection component on the programmable touch screen exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M11. The corresponding sample gas transmission time M111 and instrument response time M121 are written to the database for storage.

[0025] S08. After the second solenoid valve is closed in step S07, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0026] S09. After the first solenoid valve is opened in step S08, the first solenoid valve is closed after a delay of 300 seconds;

[0027] S10. After the first solenoid valve is closed in step S09, a delay of 10 seconds is applied, followed by opening the third solenoid valve of the third test gas input branch corresponding to the medium-concentration gas. The third solenoid valve is closed after the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M14. The corresponding sample gas transmission time M114 and instrument response time M124 are stored in the database.

[0028] S11. After the third solenoid valve is closed in step S10, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0029] S12. After the first solenoid valve is opened in step S11, the first solenoid valve is closed after a delay of 300 seconds;

[0030] S13. After the first solenoid valve is closed in step S12, a delay of 10 seconds is applied, followed by opening the fourth solenoid valve of the fourth test gas input branch corresponding to the low-concentration gas. After the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the low-concentration gas and the value stabilizes, the fourth solenoid valve is closed. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M17. The corresponding sample gas transmission time M117 and instrument response time M127 are written to the database for storage.

[0031] S14. After the fourth solenoid valve is closed in step S13, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0032] S15. After the first solenoid valve is opened in step S14, the first solenoid valve is closed after a delay of 300 seconds;

[0033] S16. The test gas input branch switching procedure starts with the start test switch being turned on and the first solenoid valve is opened;

[0034] S17. After the first solenoid valve is opened in step S16, the first solenoid valve is closed after a delay of 300 seconds;

[0035] S18. After the first solenoid valve is closed in step S17, a delay of 10 seconds is maintained. Then, the second solenoid valve of the second test gas input branch corresponding to the high-concentration gas is opened. The second solenoid valve is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M12. The corresponding sample gas transmission time M112 and instrument response time M122 are written to the database for storage.

[0036] S19. After the second solenoid valve is closed in step S18, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0037] S20. After the first solenoid valve is opened in step S19, the first solenoid valve is closed after a delay of 300 seconds;

[0038] S21. After the first solenoid valve is closed in step S20, a delay of 10 seconds is applied, followed by opening the third solenoid valve of the third test gas input branch corresponding to the medium-concentration gas. The third solenoid valve is closed after the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M15. The corresponding sample gas transmission time M115 and instrument response time M125 are stored in the database.

[0039] S22. After the third solenoid valve is closed in step S21, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0040] S23. After the first solenoid valve is opened in step S22, the first solenoid valve is closed after a delay of 300 seconds;

[0041] S24. After the first solenoid valve is closed in step S23, a delay of 10 seconds is applied, followed by opening the fourth solenoid valve of the fourth test gas input branch corresponding to the low-concentration gas. After the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the low-concentration gas and the value stabilizes, the fourth solenoid valve is closed. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M18. The corresponding sample gas transmission time M118 and instrument response time M128 are stored in the database.

[0042] S25. After the fourth solenoid valve is closed in step S24, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0043] S26. After the first solenoid valve is opened in step S25, the first solenoid valve is closed after a delay of 300 seconds;

[0044] S27. The test gas input branch switching procedure starts with the start test switch being turned on and the first solenoid valve is opened;

[0045] S28. After the first solenoid valve is opened in step S27, the first solenoid valve is closed after a delay of 300 seconds;

[0046] S29. After the first solenoid valve is closed in step S28, a delay of 10 seconds is maintained. Then, the second solenoid valve of the second test gas input branch corresponding to the high-concentration gas is opened. The second solenoid valve is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M13. The corresponding sample gas transmission time M113 and instrument response time M123 are written to the database for storage.

[0047] S30. After the second solenoid valve is closed in step S29, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0048] S31. After the first solenoid valve is opened in step S30, the first solenoid valve is closed after a delay of 300 seconds;

[0049] S32. After the first solenoid valve is closed in step S31, a delay of 10 seconds is applied, followed by opening the third solenoid valve of the third test gas input branch corresponding to the medium-concentration gas. The third solenoid valve is closed after the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M16. The corresponding sample gas transmission time M116 and instrument response time M126 are stored in the database.

[0050] S33. After the third solenoid valve is closed in step S32, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0051] S34. After the first solenoid valve is opened in step S33, the first solenoid valve is closed after a delay of 300 seconds;

[0052] S35. After the first solenoid valve is closed in step S34, a delay of 10 seconds is applied, followed by opening the fourth solenoid valve of the fourth test gas input branch corresponding to the low-concentration gas. After the analog input signal of the test value corresponding to the programmable touch screen exceeds 90% of the nominal input value of the low-concentration gas and the value stabilizes, the fourth solenoid valve is closed. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M19. The corresponding sample gas transmission time M119 and instrument response time M129 are written to the database for storage.

[0053] S36. After the fourth solenoid valve is closed in step S35, a delay of 10 seconds is applied, and then the first solenoid valve is opened;

[0054] S37. After the first solenoid valve is opened in step S36, the first solenoid valve is closed after a delay of 300 seconds;

[0055] S38. The test program ends, and the programmable touch screen automatically calculates the corresponding indication error, sample gas pipeline transmission time and instrument response time according to the built-in program.

[0056] Compared with the prior art, the present invention has the following advantages:

[0057] Since the device of the present invention realizes the automatic execution of the gas analyzer response time and indication error test, and can automatically perform calculations and data archiving based on the test results, it solves the problem in the prior art that timing and calculations rely on manual execution by testers, and reduces the labor intensity of testers. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A schematic structural diagram of the main components of a gas analyzer response time and indication error testing device according to a specific embodiment of the present invention;

[0059] Figure 2 It is a schematic diagram of the appearance of a gas analyzer response time and indication error testing device according to a specific embodiment of the present invention;

[0060] Figure 3 A schematic diagram of the internal structure of a gas analyzer response time and indication error testing device according to a specific embodiment of the present invention;

[0061] Figure 4 Schematic diagram of gas circuit connection of a device for testing response time and indication error of a gas analyzer according to a specific embodiment of the present invention;

[0062] Figure 5 This is a schematic diagram of electrical connections of a gas analyzer response time and indication error testing device according to a specific embodiment of the present invention.

[0063] Among them: 100. Power module, 110. Battery, 120. External power interface, 130. Switch, 200. Programmable touch screen, 210. Analog signal input module, 220. Switch signal output module, 211. Analog signal input terminal block, 212. Analog signal input channel, 300. Test gas input module, 300a. Solenoid valve group, 300b. One-way valve group, 310. First test gas input branch, 311. First connector, 312. First gas pipe, 313. First solenoid valve, 314. First one-way valve, 320. Second test gas input branch, 321. First Second connector, 322. Second air pipe, 323. Second solenoid valve, 324. Second one-way valve, 330. Third test gas input branch, 331. Third connector, 332. Third air pipe, 333. Third solenoid valve, 334. Third one-way valve, 340. Fourth test gas input branch, 341. Fourth connector, 342. Fourth air pipe, 343. Fourth solenoid valve, 344. Fourth one-way valve, 400. Test gas output module, 410. Test gas main air pipe, 420. Gas flow sensor, 430. Output air pipe, 440. Output connector, 450. Three-way connector, 500. Device housing DETAILED DESCRIPTION

[0064] The present invention is further illustrated below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0065] Example 1:

[0066] A gas analyzer response time and indication error testing device, such as Figure 1 、 2 , 3, comprising a power module 100, a programmable touch screen 200, a test gas input module 300, a test gas output module 400, and a device housing 500, wherein:

[0067] The power supply module 100 is electrically signal coupled to the programmable touch screen 200; the switch signal output module 220 of the programmable touch screen 200 is electrically signal coupled to the test gas input module 300, and the switch signal output module 220 is used to control the test gas input module 300 to switch between standard gases of different specifications; the analog signal input module 210 of the programmable touch screen 200 is electrically signal coupled to the test gas output module 400 through a wire; the analog signal input module 210 is electrically signal coupled to the analog signal input terminal block 211 arranged on the device housing 500 through a wire; the analog signal input terminal block 211 is electrically signal coupled to the analog signal input channel 212 arranged on the outside of the device housing 500; the analog output signal terminals of the gas analyzer to be tested are respectively connected to the corresponding analog signal input channels 212 through wires for electrical signal coupling, and the analog signal input channels 212 are used to realize external analog signal reading.

[0068] It should be noted that if Figure 5 As shown, the power module 100 includes a battery 110, an external power interface 120, and a switch 130, wherein: the battery 110 is used to power the test device; the external power interface 120 is electrically coupled to the battery 110 and is used to provide an external power charging interface for the test device; the programmable touch screen 200 is electrically coupled to the battery 110 through the switch 130, and the switch 130 is used to control the power on and off of the programmable touch screen 200.

[0069] It should be noted that if Figure 4 As shown, the test gas input module 300 includes a first test gas input branch 310, a second test gas input branch 320, a third test gas input branch 330, and a fourth test gas input branch 340; the first test gas input branch 310, the second test gas input branch 320, the third test gas input branch 330, and the fourth test gas input branch 340 are independently arranged in parallel to form a test gas input channel of the test device to realize the connection between the test gas and the gas analyzer to be tested.

[0070] It should be further explained that the first test gas input branch 310 includes a first connector 311, a first gas pipe 312, a first solenoid valve 313, and a first one-way valve 314 arranged in series; the second test gas input branch 320 includes a second connector 321, a second gas pipe 322, a second solenoid valve 323, and a second one-way valve 324 arranged in series; the third test gas input branch 330 includes a third connector 331, a third gas pipe 332, a third solenoid valve 333, and a third one-way valve 334 arranged in series; the fourth test gas input branch 340 includes a fourth connector 341, a fourth gas pipe 342, a fourth solenoid valve 343, and a fourth one-way valve 344 arranged in series; the switch signal output module 220 is connected to the first gas input branch 311 through wires. The magnetic valve 313, the second solenoid valve 323, the third solenoid valve 333, and the fourth solenoid valve 343 are electrically coupled, and the switch 130 controls the first solenoid valve 313, the second solenoid valve 323, the third solenoid valve 333, and the fourth solenoid valve 343 to switch standard gases of different specifications. The gas circuit is switched according to the action of the switch signal output module 220 of the programmable touch screen 200, so that the test gas is automatically switched according to the timing of the response time and the indication error test procedure requirements; the first one-way valve 314, the second one-way valve 324, the third one-way valve 334, and the fourth one-way valve 344 are respectively used to control the one-way flow of the test gas to prevent the test gases from being mixed and diluted with each other, and to prevent the concentration value changes caused by the backflow of the test gas causing contamination of the standard gas.

[0071] It should be noted that the test gas output module 400 includes a test gas main gas pipe 410, a gas flow sensor 420, an output gas pipe 430, an output connector 440, and a three-way connector 450, wherein: the first test gas input branch pipe 310, the second test gas input branch pipe 320, the third test gas input branch pipe 330, and the fourth test gas input branch pipe 340 are connected in parallel to the test gas main gas pipe 410 through three three-way connectors 450; the test gas main gas pipe 410, the gas flow sensor 420, the output gas pipe 430, and the output connector 440 are arranged in series to constitute a test gas output channel of the test device; the gas flow sensor 420 is electrically coupled to the analog signal input terminal block 211, and is used to monitor the test gas flow and input the analog signal to the programmable touch screen 200, so that the programmable touch screen 200 reads and displays the standard gas flow signal, which is convenient for timely adjustment of the standard gas flow.

[0072] It should be further explained that the test gas main pipe 410 is connected to the gas flow sensor 420 and the output connector 440 through a pipe. The test gas main pipe 410 constitutes a test gas output channel from the response time and indication error testing device to the gas analyzer to be tested.

[0073] It should be noted that the external power interface 120, the switch 130, the programmable touch screen 200, the analog signal input channel 212, the first connector 311, the second connector 321, the third connector 331, the fourth connector 341, and the output connector 440 are respectively fixedly installed at corresponding positions on the outside of the device housing 500; the battery 110, the first air pipe 312, the first solenoid valve 313, the first one-way valve 314, the second air pipe 322, the second solenoid valve 323, the second one-way valve 324, the third air pipe 332, the third solenoid valve 333, the third one-way valve 334, the fourth air pipe 342, the fourth solenoid valve 343, the fourth one-way valve 344, the test gas main air pipe 410, the three-way connector 450, the gas flow sensor 420, and the output air pipe 430 are respectively fixedly installed at corresponding positions inside the device housing 500.

[0074] It should be noted that the testing device also includes an external input terminal and an external display terminal that are matched therewith; the external input terminal is electrically coupled to the programmable touch screen 200 and is used to input relevant parameter settings and operations of the test task; the external display terminal is electrically coupled to the programmable touch screen 200 and is used to display the test process and test results of the testing device.

[0075] It should be noted that the programmable touch screen 200 is connected to the analog signal input terminal block 211, and the output signal corresponding to the analog quantity of the gas analyzer to be tested is connected to the analog signal input terminal block 211 through a wire, so that the programmable touch screen 200 can read the corresponding measurement value of the gas analyzer to be tested; by comparing the corresponding analog signal with the corresponding input standard gas concentration value in the programmable touch screen 200, the timing of the gas analyzer response time and the indication error test result calculation are realized.

[0076] It should be further explained that the controller of the programmable touch screen 200 has built-in configuration software and touch screen functional equipment. The programmable touch screen 200 can realize logical operation configuration, configuration screen and historical data display and storage, analog signal reading, logical control operation, human-computer interaction operation, and switch signal output functions.

[0077] It should be further explained that the programmable touch screen 200 has a built-in configuration program for the indication error and response time test project. The project program includes an indication error and response time test parameter setting program, an indication error and response time test execution program, an indication error and response time test pause program, an indication error and response time test process data reading, operation and storage program, and an indication error and response time test historical data report export program.

[0078] The tester can input the standard gas nominal value information, operate the test start switch, pause the operation program, and end the operation program through the relevant parameter setting interface of the programmable touch screen 200.

[0079] It should be further explained that the indication error and response time test pause program is to set a pause button on the programmable touch screen 200. The tester can operate the pause switch on the programmable touch screen to pause the indication error and response time test execution program.

[0080] The data reading, calculation and storage program of the indication error and response time test process refers to the built-in response time test timer timing data calculation and storage program of the indication error test result data on the programmable touch screen 200 .

[0081] The program for exporting historical data reports of indication error and response time tests is a program that can display test results in a standard report format on a programmable touch screen and can export test results.

[0082] It should be further explained that the switch signal output module 220 of the programmable touch screen 200 can realize the action of the solenoid valve group 300a corresponding to the output signal, and realize the automatic switching of the air flow channels of the first test gas input branch 310, the second test gas input branch 320, the third test gas input branch 330, the fourth test gas input branch 340 and the test gas main gas pipe 410.

[0083] It should be further explained that the technical purpose of the present invention is to automatically record the response time and standard gas test value after reading the analog signal output corresponding to the gas analyzer under test and meeting the test requirements, and automatically switch the standard gas for testing according to the test conditions. During the test, the measured value can be displayed in real time on the programmable touch screen 200. After the standard gas nominal value is set on the programmable touch screen 200, the programmable touch screen 200 automatically calculates the test program and automatically calculates the test results according to the test conditions.

[0084] Through programming of the programmable touch screen 200, a calculation formula operation button is set on the programmable touch screen 200. The calculation formula operation button needs to be set by the tester according to the specification requirements based on the test gas composition. The indication error calculation is calculated according to different formulas based on the setting status of the calculation formula operation button.

[0085] By programming the programmable touch screen 200, the programmable touch screen 200 can display the test gas flow value measured by the gas flow sensor, which is convenient for the tester to adjust the standard gas pressure reducing valve in time to control the test gas flow according to the test gas flow.

[0086] Through programming of the programmable touch screen 200 , a test start button is provided on the programmable touch screen.

[0087] By programming the programmable touch screen 200 , the programmable touch screen 200 can record the current system time when the tester presses the test start button and automatically save it to the history record according to the time sequence.

[0088] By programming the programmable touch screen 200 , the programmable touch screen 200 is provided with high concentration gas nominal value input, medium and high concentration gas nominal value input, medium and high concentration gas nominal value, and analyzer detection component range value input setting functions.

[0089] A testing method utilizing a gas analyzer response time and indication error testing device, wherein an application configuration project is provided in the testing device, and a test task operation model is pre-stored in the application configuration project; the test task operation model includes an analog switch output signal operation model, an analog input signal reading model, a response time timing operation model, and an indication error test result operation model; the analog switch output signal operation model is used to control the opening or closing of the first solenoid valve 313, the second solenoid valve 323, the third solenoid valve 333, and the fourth solenoid valve 343 through the switch signal output module 220 according to a preset control rule; the analog input signal reading model is used to read the detection values ​​of the gas analyzer to be tested and the gas flow sensor 420; the response time timing operation model is used to start and time the timer group built into the programmable touch screen 200 according to a preset rule; and the indication error test result operation model is used to calculate the indication error of the test gas according to a preset algorithm.

[0090] It should be noted that the test method specifically includes the following steps:

[0091] S01. Input the standard gas nominal value information through the parameter setting interface of the programmable touch screen 200;

[0092] S02. After turning on the start test switch on the programmable touch screen 200, the programmable touch screen 200 controls the opening and closing of the corresponding solenoid valve according to the preset program steps, thereby connecting the corresponding test gas input branch and executing the test gas input branch switching program and response time timing program according to the system settings;

[0093] S03. The response time timing program starts with the opening command action of the solenoid valve of the input branch of the range calibration test gas, and starts timing until the analog input signal of the test value of the analyzer detection component on the programmable touch screen 200 exceeds 2.5% of the analyzer detection component range input value as the end point. The timing data of this period is calculated as the sample gas pipeline transmission time and is sent to the register and written to the database storage;

[0094] S04. The response time timing program starts when the analog input signal of the analyzer detection component on the programmable touch screen 200 exceeds 2.5% of the analyzer detection component range input value and ends when the analog input signal of the analyzer detection component on the programmable touch screen 200 exceeds 90% of the analyzer detection component range input value. The timing data during this period is recorded as the instrument response time and entered into the register and written to the database for storage;

[0095] S05. The test gas input branch switching program starts with the test switch being turned on, and the first solenoid valve 313 of the first test gas input branch 310 corresponding to the zero gas is opened;

[0096] S06. After the first solenoid valve 313 is opened in step S05, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0097] S07. After the first solenoid valve 313 is closed in step S06, a delay of 10 seconds is applied. Then, the second solenoid valve 323 of the second test gas input branch 320 corresponding to the high-concentration gas is opened. The second solenoid valve 323 is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen 200 exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M11. The corresponding sample gas transmission time M111 and instrument response time M121 are stored in the database.

[0098] S08. After the second solenoid valve 323 is closed in step S07, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0099] S09. After the first solenoid valve 313 is opened in step S08, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0100] S10. After the first solenoid valve 313 is closed in step S09, a delay of 10 seconds is applied. Then, the third solenoid valve 333 of the third test gas input branch 330 corresponding to the medium-concentration gas is opened. The third solenoid valve 333 is closed after the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to a register and recorded as analog input signal data M14. The corresponding sample gas transmission time M114 and instrument response time M124 are stored in the database.

[0101] S11. After the third solenoid valve 333 is closed in step S10, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0102] S12. After the first solenoid valve 313 is opened in step S11, a delay of 300 seconds is performed and then the first solenoid valve 313 is closed;

[0103] S13. After the first solenoid valve 313 is closed in step S12, a delay of 10 seconds is applied. Then, the fourth solenoid valve 343 of the fourth test gas input branch 340 corresponding to the low-concentration gas is opened. After the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal low-concentration gas input value and the value stabilizes, the fourth solenoid valve 343 is closed. The analog input signal data corresponding to this period is sent to a register and recorded as analog input signal data M17. The corresponding sample gas transmission time M117 and instrument response time M127 are stored in the database.

[0104] S14. After the fourth solenoid valve 343 is closed in step S13, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0105] S15. After the first solenoid valve 313 is opened in step S14, a delay of 300 seconds is performed and then the first solenoid valve 313 is closed;

[0106] S16. The test gas input branch switching procedure starts with the test switch being turned on and the first solenoid valve 313 is opened;

[0107] S17. After the first solenoid valve 313 is opened in step S16, a delay of 300 seconds is performed and then the first solenoid valve 313 is closed;

[0108] S18. After the first solenoid valve 313 is closed in step S17, a delay of 10 seconds is applied. Then, the second solenoid valve 323 of the second test gas input branch 320 corresponding to the high-concentration gas is opened. The second solenoid valve 323 is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen 200 exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M12. The corresponding sample gas transmission time M112 and instrument response time M122 are written to the database for storage.

[0109] S19. After the second solenoid valve 323 is closed in step S18, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0110] S20. After the first solenoid valve 313 is opened in step S19, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0111] S21. After the first solenoid valve 313 is closed in step S20, a delay of 10 seconds is applied. Then, the third solenoid valve 333 of the third test gas input branch 330 corresponding to the medium-concentration gas is opened. Third solenoid valve 333 is closed after the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to a register and recorded as analog input signal data M15. The corresponding sample gas transmission time M115 and instrument response time M125 are stored in the database.

[0112] S22. After the third solenoid valve 333 is closed in step S21, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0113] S23. After the first solenoid valve 313 is opened in step S22, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0114] S24. After the first solenoid valve 313 is closed in step S23, a delay of 10 seconds is applied. Then, the fourth solenoid valve 343 of the fourth test gas input branch 340 corresponding to the low-concentration gas is opened. After the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal low-concentration gas input value and the value stabilizes, the fourth solenoid valve 343 is closed. The analog input signal data corresponding to this period is sent to a register and recorded as analog input signal data M18. The corresponding sample gas transmission time M118 and instrument response time M128 are stored in the database.

[0115] S25. After the fourth solenoid valve 343 is closed in step S24, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0116] S26. After the first solenoid valve 313 is opened in step S25, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0117] S27. The test gas input branch switching procedure starts with the test switch being turned on and the first solenoid valve 313 is opened;

[0118] S28. After the first solenoid valve 313 is opened in step S27, a delay of 300 seconds is performed and then the first solenoid valve 313 is closed;

[0119] S29. After the first solenoid valve 313 is closed in step S28, a delay of 10 seconds is applied. Then, the second solenoid valve 323 of the second test gas input branch 320 corresponding to the high-concentration gas is opened. The second solenoid valve 323 is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen 200 exceeds 90% of the nominal input value of the high-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M13. The corresponding sample gas transmission time M113 and instrument response time M123 are written to the database for storage.

[0120] S30. After the second solenoid valve 323 is closed in step S29, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0121] S31. After the first solenoid valve 313 is opened in step S30, the first solenoid valve 313 is closed after a delay of 300 seconds;

[0122] S32. After the first solenoid valve 313 is closed in step S31, a delay of 10 seconds is applied. Then, the third solenoid valve 333 of the third test gas input branch 330 corresponding to the medium-concentration gas is opened. Third solenoid valve 333 is closed after the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal input value of the medium-concentration gas and the value stabilizes. The analog input signal data corresponding to this period is sent to a register and recorded as analog input signal data M16. The corresponding sample gas transmission time M116 and instrument response time M126 are stored in the database.

[0123] S33. After the third solenoid valve 333 is closed in step S32, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0124] S34. After the first solenoid valve 313 is opened in step S33, a delay of 300 seconds is applied and the first solenoid valve 313 is closed;

[0125] S35. After the first solenoid valve 313 is closed in step S34, a delay of 10 seconds is applied. Then, the fourth solenoid valve 343 of the fourth test gas input branch 340 corresponding to the low-concentration gas is opened. After the analog input signal of the test value corresponding to the programmable touch screen 200 exceeds 90% of the nominal low-concentration gas input value and the value stabilizes, the fourth solenoid valve 343 is closed. The analog input signal data corresponding to this period is sent to the register and recorded as analog input signal data M19. The corresponding sample gas transmission time M119 and instrument response time M129 are stored in the database.

[0126] S36. After the fourth solenoid valve 343 is closed in step S35, a delay of 10 seconds is applied, and then the first solenoid valve 313 is opened;

[0127] S37. After the first solenoid valve 313 is opened in step S36, a delay of 300 seconds is performed and then the first solenoid valve 313 is closed;

[0128] S38. After the test procedure is completed, the programmable touch screen 200 automatically calculates the corresponding indication error, sample gas pipeline transmission time and instrument response time according to the built-in program.

[0129] Example 2:

[0130] Example 2 includes all the contents of Example 1. In this example, the gas analyzer to be tested is a gas analyzer for measuring the infrared components of SO2 and NO and the content of O2.

[0131] Specifically, the range of SO2 measured by the gas analyzer to be tested is 0-100mg / m 3 , the measurement range of NO is 0-100mg / m 3 The measuring range of O2 is 0-25%. This embodiment only measures the indication error and response time of the SO2 component of the gas analyzer.

[0132] The zero gas used in the test is a certified N2 standard gas with a nominal value of 99.999%.

[0133] The high concentration of SO2 standard gas used in the test is nominally 90 mg / m 3 The certified SO2 standard gas and SO2 medium concentration standard gas have a nominal value of 60mg / m 3 The certified SO2 standard gas and SO2 low concentration standard gas have a nominal value of 60mg / m 3 Certified SO2 standard gas.

[0134] It should be noted that this embodiment includes the following specific steps:

[0135] Sa01. By programming the programmable touch screen 200, the programmable touch screen 200 assigns the register M1 to the high-concentration gas nominal value input value.

[0136] Sa02. By programming the programmable touch screen 200, the programmable touch screen 200 assigns register M2 to the medium concentration gas nominal value input value.

[0137] Sa03. By programming the programmable touch screen 200, the programmable touch screen 200 assigns register M3 to the low-concentration gas nominal value input value.

[0138] Sa04. By programming the programmable touch screen 200, the programmable touch screen 200 assigns register M4 to the analyzer detection component range input value.

[0139] Sa05. By programming the programmable touch screen 200, the programmable touch screen 200 can record the setting values ​​input by the tester and save them to the historical record.

[0140] Sa06. By programming the programmable touch screen 200, the programmable touch screen 200 can record the setting values ​​input by the tester and save them to the historical record.

[0141] Sa07. Set the nominal value of high-concentration gas to 90, the nominal value of medium-concentration gas to 60, and the nominal value of low-concentration gas to 30 on the programmable touch screen 200.

[0142] Sa08. By programming the programmable touch screen 200, the test value of the analyzer detection component is read on the programmable touch screen 200 through the analog signal input channel 212.

[0143] Sa09. By programming the programmable touch screen 200, the programmable touch screen 200 calculates and displays the data change rate of the analyzer detection component test value by reading the test gas analyzer SO2 test value every 30 seconds.

[0144] Sa10. By programming the programmable touch screen 200, when the change rate of the test value data of the analyzer detection component displayed on the programmable touch screen 200 is less than 1.03, the programmable touch screen 200 outputs the stable test value of the analyzer detection component.

[0145] Sa11. Connect the 4-20mA current signal output by the SO2 measurement value of the gas analyzer to be tested to the analog signal input channel 212 with a wire to realize the reading of the analog signal of the test value of the programmable touch screen 200 and the gas analyzer to be tested.

[0146] Sa12. Adjust the outlet flow rate of N2 standard gas with a nominal value of 99.999% to 1.2 L / min through a pressure reducing regulating valve and then securely connect it to the first connector 311.

[0147] Sa13. The nominal value of the test is 90mg / m 3 The high-concentration SO2 standard gas is fastened to the second joint 321 after the outlet flow rate is adjusted to 1.2 L / min by the pressure reducing regulating valve.

[0148] Sa14. The nominal value of the test is 60mg / m 3 The medium-concentration SO2 standard gas is adjusted to a gas outlet flow rate of 1.2 L / min through a pressure reducing regulating valve and then fastened to the third joint 331.

[0149] Sa15. The test value is 30mg / m 3The low-concentration SO2 standard gas is adjusted to a gas outlet flow rate of 1.2 L / min through a pressure reducing regulating valve and then fastened to the fourth joint 341.

[0150] Sa16. Connect the output connector 440 to the standard gas input interface of the gas analyzer to be tested with a gas pipe to realize the gas connection of the test gas from the response time and indication error test device to the gas analyzer to be tested.

[0151] Sa17. Turn on the switch 130, and the battery 110 supplies power to the programmable touch screen 200 through the wire and the switch 130, and the test device starts running.

[0152] Sa18. By programming the programmable touch screen 200, the tester presses the test start button on the programmable touch screen 200, and the programmable touch screen 200 starts the timer T11 and simultaneously controls the corresponding first solenoid valve 313 to open through the switch output channel.

[0153] Sa19. Through programming of the programmable touch screen 200, when the timer T11 counts down to 300 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0154] Sa20. By programming the programmable touch screen 200, when the timer T11 reaches 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to open, the timer T11 is reset to zero and the timer T111 is started.

[0155] Sa21. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 2.5% of M4, the timer T121 starts timing, the timer T111 stops and the timer data is sent to the register M111.

[0156] Sa22. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1, the timer T121 stops and the timer data is sent to the register M121.

[0157] Sa23. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1 and the analyzer detection component test value is stable, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to close, and sends the analyzer detection component test value read on the programmable touch screen 200 to the register M11.

[0158] Sa24. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to be closed, the timer T12 is started to start timing.

[0159] Sa25. By programming the programmable touch screen 200, when the timer T12 reaches 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0160] Sa26. Through programming of the programmable touch screen 200, when the timer T12 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0161] Sa27. By programming the programmable touch screen 200, when the timer T12 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to open, the timer T12 is reset to zero and the timer T114 is started.

[0162] Sa28. By programming the programmable touch screen 200, when the test value of the analyzer detection component read on the programmable touch screen 200 is higher than 2.5% of M4, timer T124 starts timing, timer T114 stops and the timer data is sent to register M114.

[0163] Sa29. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M2, the timer T124 stops and the timer data is sent to the register M124.

[0164] Sa30. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M2 and the analyzer detection component test value is stable, the programmable touch screen 200 switch output channel controls the corresponding third solenoid valve 333 to close, and the analyzer detection component test value read on the programmable touch screen 200 is sent to the register M14.

[0165] Sa31. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to be closed, the timer T13 is started to start timing.

[0166] Sa32. By programming the programmable touch screen 200, when the timer T13 reaches 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0167] Sa33. Through programming of the programmable touch screen 200, when the timer T13 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0168] Sa34. By programming the programmable touch screen 200, when the timer T13 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding fourth solenoid valve 343 to open, the timer T13 is reset to zero and the timer T117 is started.

[0169] Sa35. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 2.5% of M4, timer T127 starts timing, timer T117 stops and the timer data is sent to register M117.

[0170] Sa36. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3, the timer T127 stops and the timer data is sent to the register M127.

[0171] Sa37. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3 and the analyzer detection component test value is stable, the programmable touch screen 200 switch output channel controls the corresponding fourth solenoid valve 343 to close, and the analyzer detection component test value read on the programmable touch screen 200 is sent to register M17.

[0172] Sa38. By programming the programmable touch screen 200, when the fourth solenoid valve 343 corresponding to the switch output channel of the programmable touch screen 200 is closed, the counter register M10 of the programmable touch screen 200 is assigned a value of 1, the counter is started, and the timer T14 is started at the same time to start timing.

[0173] Sa39. By programming the programmable touch screen 200, when the timer T14 counts to 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0174] Sa40. Through programming of the programmable touch screen 200, when the timer T14 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0175] Sa41. By programming the programmable touch screen 200, when the timer T14 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to open, the timer T14 is reset to zero and the timer T112 is started.

[0176] Sa42. By programming the programmable touch screen 200, when the analyzer detection component read on the programmable touch screen 200 is higher than 2.5% of M4, timer T122 starts timing, timer T112 stops and the timer data is sent to register M112.

[0177] Sa43. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1, the timer T122 stops and the timer data is sent to the register M122.

[0178] Sa44. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1 and the analyzer detection component test value is stable, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to close, and sends the analyzer detection component test value read on the programmable touch screen 200 to the register M12.

[0179] Sa45. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to be closed, the timer T14 is started to start timing.

[0180] Sa46. By programming the programmable touch screen 200, when the timer T15 reaches 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0181] Sa47. Through programming of the programmable touch screen 200, when the timer T15 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0182] Sa48. By programming the programmable touch screen 200, when the timer T15 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to open, the timer T15 is reset to zero and the timer T115 is started.

[0183] Sa49. By programming the programmable touch screen 200, when the test value of the analyzer detection component read on the programmable touch screen 200 is higher than 2.5% of M4, timer T125 starts timing, timer T115 stops and the timer data is sent to register M115.

[0184] Sa50. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M2, the timer T125 stops and the timer data is sent to the register M125.

[0185] Sa51. Through programming of the programmable touch screen 200, when the test value of the analyzer detection component read on the programmable touch screen 200 is higher than 90% of M2 and the test value of the analyzer detection component is stable, the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to close, and sends the test value of the analyzer detection component read on the programmable touch screen 200 to the register M15.

[0186] Sa52. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to be closed, the timer T16 is started to start timing.

[0187] Sa53. By programming the programmable touch screen 200, when the timer T16 reaches 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0188] Sa54. Through programming of the programmable touch screen 200, when the timer T16 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0189] Sa55. By programming the programmable touch screen 200, when the timer T16 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding fourth solenoid valve 343 to open, the timer T16 is reset to zero and the timer T118 is started.

[0190] Sa56. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 2.5% of M4, timer T128 starts timing, timer T118 stops and the timer data is sent to register M118.

[0191] Sa57. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3, the timer T128 stops and the timer data is sent to the register M128.

[0192] Sa58. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3 and the analyzer detection component test value is stable, the programmable touch screen 200 switch output channel controls the corresponding fourth solenoid valve 343 to close, and the analyzer detection component test value read on the programmable touch screen 200 is sent to the register M18.

[0193] Sa59. Through programming of the programmable touch screen 200, when the fourth solenoid valve 343 corresponding to the switch output channel of the programmable touch screen 200 is closed, the counter register M10 of the programmable touch screen 200 is assigned a value of 2, the counter is started and the timer T17 is started at the same time to start timing.

[0194] Sa60. By programming the programmable touch screen 200, when the timer T17 counts to 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open and starts the timer T15 to start timing.

[0195] Sa61. Through programming of the programmable touch screen 200, when the timer T17 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0196] Sa62. By programming the programmable touch screen 200, when the timer T17 reaches 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to open, the timer T17 is reset to zero and the timer T113 is started.

[0197] Sa63. By programming the programmable touch screen 200, when the analyzer detection component read on the programmable touch screen 200 is higher than 2.5% of M4, timer T123 is started to start timing, timer T113 is stopped and the timer data is sent to register M113.

[0198] Sa64. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1, the timer T123 stops and the timer data is sent to the register M123.

[0199] Sa65. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M1 and the analyzer detection component test value is stable, the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to close, and sends the analyzer detection component test value read on the programmable touch screen 200 to the register M12.

[0200] Sa66. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding second solenoid valve 323 to be closed, the timer T18 is started to start timing.

[0201] Sa67. By programming the programmable touch screen 200, when the timer T18 counts down to 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0202] Sa68. Through programming of the programmable touch screen 200, when the timer T18 counts to 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0203] Sa69. By programming the programmable touch screen 200, when the timer T18 reaches 330 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to open, the timer T18 is reset to zero, and the timer T116 is started.

[0204] Sa70. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 2.5% of M4, timer T126 starts timing, timer T116 stops and sends the timer data to register M116.

[0205] Sa71. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M2, the timer T126 stops and the timer data is sent to the register M121.

[0206] Sa72. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M2 and the analyzer detection component test value is stable, the programmable touch screen 200 switch output channel controls the corresponding third solenoid valve 333 to close, and sends the analyzer detection component test value read on the programmable touch screen 200 to the register M16.

[0207] Sa73. By programming the programmable touch screen 200, when the switch output channel of the programmable touch screen 200 controls the corresponding third solenoid valve 333 to be closed, the timer T19 starts timing.

[0208] Sa74. Through programming of the programmable touch screen 200, when the timer T19 counts to 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0209] Sa75. Through programming of the programmable touch screen 200, when the timer T19 counts to 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close.

[0210] Sa76. By programming the programmable touch screen 200, when the timer T19 counts to 320 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding fourth solenoid valve 343 to open, the timer T19 is reset to zero and the timer T119 is started.

[0211] Sa77. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 2.5% of M4, timer T129 starts timing, timer T119 stops and the timer data is sent to register M119.

[0212] Sa78. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3, the timer T121 stops and the timer data is sent to the register M129.

[0213] Sa79. By programming the programmable touch screen 200, when the analyzer detection component test value read on the programmable touch screen 200 is higher than 90% of M3 and the analyzer detection component test value is stable, the programmable touch screen 200 switch output channel controls the corresponding fourth solenoid valve 343 to close, and the analyzer detection component test value read on the programmable touch screen 200 is sent to register M19.

[0214] Sa80. Through programming of the programmable touch screen 200, when the fourth solenoid valve 343 corresponding to the switch output channel is closed, the counter register M10 of the programmable touch screen 200 is assigned a value of 3, the counter is started and the timer T20 is started at the same time to start timing.

[0215] Sa81. By programming the programmable touch screen 200, when the timer T20 reaches 10 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to open.

[0216] Sa82. By programming the programmable touch screen 200, when the timer T20 reaches 310 seconds, the switch output channel of the programmable touch screen 200 controls the corresponding first solenoid valve 313 to close, the test program ends, and the timer T20 is reset to zero.

[0217] Sa83. By programming the programmable touch screen 200, when the test program ends, the programmable touch screen 200 starts to automatically calculate the indication error test result according to the calculation formula operation button status.

[0218] Sa84. By programming the programmable touch screen 200, when the calculation formula operation button is not pressed, the programmable touch screen 200 automatically calculates the high concentration test gas indication error according to formula (1) in accordance with relevant specifications:

[0219]

[0220] Sa85. By programming the programmable touch screen 200, when the calculation formula operation button is not pressed, the programmable touch screen 200 automatically calculates the indication error of the medium concentration test gas according to formula (2) in accordance with relevant specifications:

[0221]

[0222] Sa86. By programming the programmable touch screen 200, when the calculation formula operation button is not pressed, the programmable touch screen 200 automatically calculates the low-concentration test gas indication error according to formula (3) in accordance with relevant specifications:

[0223]

[0224] Sa87. By programming the programmable touch screen 200, when the calculation formula operation button is pressed, the programmable touch screen 200 automatically calculates the high concentration test gas indication error according to formula (4) in accordance with relevant specifications:

[0225]

[0226] Sa88. By programming the programmable touch screen 200, when the calculation formula operation button is pressed, the programmable touch screen 200 automatically calculates the indication error of the medium concentration test gas according to the formula (5) in accordance with the relevant specifications:

[0227]

[0228] Sa89. By programming the programmable touch screen 200, when the calculation formula operation button is pressed, the programmable touch screen 200 automatically calculates the low-concentration test gas indication error according to formula (6) in accordance with relevant specifications:

[0229]

[0230] Sa90. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the high-concentration test gas sample pipeline transmission time response time according to formula (7) in accordance with relevant specifications:

[0231] T11=(M111 / 2+M112 / 2+M113 / 2) / 3 (7)

[0232] Sa91. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the high-concentration test gas instrument response time according to formula (8) in accordance with relevant specifications:

[0233] T12=(M121+M122+M123) / 3 (8)

[0234] Sa92. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the high-concentration test gas CEMS system response time according to formula (9) in accordance with relevant specifications:

[0235] T01=T11+T12 (9)

[0236] Sa93. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the response time of the medium-concentration test gas sample pipeline transmission time according to formula (10) in accordance with relevant specifications:

[0237] T21=(M114 / 2+M115 / 2+M116 / 2) / 3 (10)

[0238] Sa94. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the response time of the medium-concentration test gas meter according to formula (11) in accordance with relevant specifications:

[0239] T22=(M124+M125+M126) / 3 (11)

[0240] Sa95. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the response time of the medium-concentration test gas CEMS system according to formula (12) in accordance with relevant specifications:

[0241] T02=T21+T22 (12)

[0242] Sa96. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the low-concentration test gas sample pipeline transmission time response time according to formula (13) in accordance with relevant specifications:

[0243] T31=(M117 / 2+M118 / 2+M119 / 2) / 3 (13)

[0244] Sa97. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the low-concentration test gas meter response time according to formula (14) in accordance with relevant specifications:

[0245] T32=(M127+M128+M129) / 3 (14)

[0246] Sa98. By programming the programmable touch screen 200, the programmable touch screen 200 automatically calculates the low-concentration test gas CEMS system response time according to formula (15) in accordance with relevant specifications:

[0247] T03=T31+T32 (15)

[0248] Sa99. By programming the programmable touch screen 200, the programmable touch screen 200 records the system time when the above test starts, the setting value input by the tester, and the stored data M1, M2, M3, M4, M11, M12, M13, M14, M15, M16, M17, M18, M19, M111, M112, M113, M114, M115, M116, M117, M118, M119, M121, M122, M123, M124, M125, M126, M127, M128, M129, T11, T12, T21, T22, T31, T32, T01, T02, and T03 respectively to form corresponding historical records for preservation.

[0249] In the foregoing detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that embodiments of the claimed subject matter require more features than are expressly recited in each claim. On the contrary, as reflected in the appended claims, the invention comprises less than all the features of any individual disclosed embodiment. The appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0250] The above description of the disclosed embodiments is intended to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments presented herein but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0251] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purposes of describing the above embodiments, but one of ordinary skill in the art will recognize that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent the term "comprising" is used in the specification or claims, the term is intended to be encompassed in a manner similar to the term "including," as explained in terms of "including," used as a transitional word in the claims. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or."

[0252] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas analyzer response time and indication error testing device, characterized by: It comprises a power supply module (100), a programmable touch screen (200), a test gas input module (300), a test gas output module (400), and a device housing (500), wherein: The power supply module (100) is electrically signal coupled to the programmable touch screen (200); the switch signal output module (220) of the programmable touch screen (200) is electrically signal coupled to the test gas input module (300), and the switch signal output module (220) is used to control the test gas input module (300) to switch between standard gases of different specifications; the analog signal input module (210) of the programmable touch screen (200) is electrically signal coupled to the test gas output module (400) through a wire; the analog signal input module (210) is electrically signal coupled to an analog signal input terminal block (211) provided on the device housing (500) through a wire; the analog signal input terminal block (211) is electrically signal coupled to an analog signal input channel (212) provided outside the device housing (500); the analog output signal terminals of the gas analyzer to be tested are respectively connected to the corresponding analog signal input channels (212) through wires for electrical signal coupling.

2. The gas analyzer response time and indication error testing device according to claim 1, characterized in that: The power module (100) comprises a battery (110), an external power interface (120), and a switch (130), wherein: the battery (110) is used to power the test device; the external power interface (120) is electrically signal coupled to the battery (110) and is used to provide an external power charging interface for the test device; the programmable touch screen (200) is electrically signal coupled to the battery (110) via the switch (130), and the switch (130) is used to control the programmable touch screen (200) to turn on and off.

3. The gas analyzer response time and indication error testing device according to claim 2, characterized in that: The test gas input module (300) comprises a first test gas input branch pipe (310), a second test gas input branch pipe (320), a third test gas input branch pipe (330), and a fourth test gas input branch pipe (340); the first test gas input branch pipe (310), the second test gas input branch pipe (320), the third test gas input branch pipe (330), and the fourth test gas input branch pipe (340) are independently connected in parallel to form a test gas input channel of the test device.

4. The gas analyzer response time and indication error testing device according to claim 3, characterized in that: The first test gas input branch pipe (310) comprises a first connector (311), a first gas pipe (312), a first solenoid valve (313), and a first one-way valve (314) arranged in series; the second test gas input branch pipe (320) comprises a second connector (321), a second gas pipe (322), a second solenoid valve (323), and a second one-way valve (324) arranged in series; the third test gas input branch pipe (330) comprises a third connector (331), a third gas pipe (332), a third solenoid valve (333), and a third one-way valve (334) arranged in series; the fourth test gas input branch pipe (340) comprises a fourth connector (341), a fourth gas pipe (342), and a fourth solenoid valve (343) arranged in series. , a fourth one-way valve (344); the switch signal output module (220) is electrically coupled to the first solenoid valve (313), the second solenoid valve (323), the third solenoid valve (333), and the fourth solenoid valve (343) through wires, and controls the first solenoid valve (313), the second solenoid valve (323), the third solenoid valve (333), and the fourth solenoid valve (343) through the switch (130) to switch standard gases of different specifications; the first one-way valve (314), the second one-way valve (324), the third one-way valve (334), and the fourth one-way valve (344) are respectively used to control the one-way flow of the test gas to prevent the test gases from being mixed and diluted with each other.

5. The gas analyzer response time and indication error testing device according to claim 4, characterized in that: The test gas output module (400) comprises a test gas main gas pipe (410), a gas flow sensor (420), an output gas pipe (430), an output connector (440), and a three-way connector (450), wherein: the first test gas input branch pipe (310), the second test gas input branch pipe (320), the third test gas input branch pipe (330), and the fourth test gas input branch pipe (340) are connected in parallel and converged to the test gas main gas pipe (410) through three three-way connectors (450); the test gas main gas pipe (410), the gas flow sensor (420), the output gas pipe (430), and the output connector (440) are arranged in series to form a test gas output channel of the test device; the gas flow sensor (420) is electrically coupled to the analog signal input terminal block (211) and is used to monitor the test gas flow and input the analog signal to the programmable touch screen (200).

6. The gas analyzer response time and indication error testing device according to claim 5, characterized in that: The external power interface (120), the switch (130), the programmable touch screen (200), the analog signal input channel (212), the first connector (311), the second connector (321), the third connector (331), the fourth connector (341), and the output connector (440) are respectively fixedly mounted at corresponding positions on the outside of the device housing (500); the battery (110), the first air pipe (312), the first solenoid valve (313), the first one-way valve (314), the The second air pipe (322), the second solenoid valve (323), the second one-way valve (324), the third air pipe (332), the third solenoid valve (333), the third one-way valve (334), the fourth air pipe (342), the fourth solenoid valve (343), the fourth one-way valve (344), the test gas main air pipe (410), the three-way connector (450), the gas flow sensor (420), and the output air pipe (430) are respectively fixedly mounted at corresponding positions inside the device housing (500).

7. The gas analyzer response time and indication error testing device according to claim 6, characterized in that: The test device further comprises an external input terminal and an external display terminal matched therewith; the external input terminal is electrically coupled to the programmable touch screen (200) and is used for inputting relevant parameter settings and operations of the test task; the external display terminal is electrically coupled to the programmable touch screen (200) and is used for displaying the test process and test results of the test device.

8. A testing method using the gas analyzer response time and indication error testing device according to any one of claims 1 to 7, characterized in that: The test device is provided with an application configuration project, wherein the application configuration project pre-stores a test task operation model; the test task operation model comprises an analog switch output signal operation model, an analog input signal reading model, a response time timing operation model, and an indication error test result operation model; the analog switch output signal operation model is used to control the opening or closing of the first solenoid valve (313), the second solenoid valve (323), the third solenoid valve (333), and the fourth solenoid valve (343) through the switch signal output module (220) according to a preset control rule; the analog input signal reading model is used to read the detection values ​​of the gas analyzer to be tested and the gas flow sensor (420); the response time timing operation model is used to start the timer group built into the programmable touch screen (200) and time according to a preset rule; and the indication error test result operation model is used to calculate the indication error of the test gas according to a preset algorithm.

9. The testing method according to claim 8, wherein: The testing method specifically comprises the following steps: S01. Inputting standard gas nominal value information through the parameter setting interface of the programmable touch screen (200); S02. After turning on the start test switch of the programmable touch screen (200), the programmable touch screen (200) controls the opening and closing of the corresponding solenoid valve according to the preset program steps, thereby connecting the corresponding test gas input branch pipe, and executing the test gas input branch switching program and the response time timing program according to the system settings; S03. The response time timing program starts from the opening instruction action of the electromagnetic valve of the test gas input branch pipe for the range calibration, and ends when the analog input signal of the test value of the analyzer detection component on the programmable touch screen (200) exceeds 2.5% of the range input value of the analyzer detection component. The timing data of this period is recorded as the sample gas pipeline transmission time through calculation and sent to the register and written into the database for storage; S04. The response time timing program starts from the time when the analog input signal of the analyzer detection component on the programmable touch screen (200) exceeds 2.5% of the range input value of the analyzer detection component, and ends when the analog input signal of the analyzer detection component on the programmable touch screen (200) exceeds 90% of the range input value of the analyzer detection component, and the timing data of this period is recorded as the instrument response time, sent to the register, and written into the database for storage; S05. The test gas input branch switching procedure starts with the start test switch being turned on, and opens the first solenoid valve (313) of the first test gas input branch (310) corresponding to the zero gas; S06. After the first solenoid valve (313) is opened in step S05, the first solenoid valve (313) is closed after a delay of 300 seconds; S07. After the first solenoid valve (313) is closed in step S06, a delay of 10 seconds is performed, and then the second solenoid valve (323) of the second test gas input branch (320) corresponding to the high-concentration gas is opened, and the second solenoid valve (323) is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen (200) exceeds 90% of the nominal input value of the high-concentration gas and the value is stable; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M11; the corresponding sample gas transmission time M111 and instrument response time M121 are written into the database for storage; S08. After the second solenoid valve (323) is closed in step S07, a delay of 10 seconds is maintained, and then the first solenoid valve (313) is opened; S09. After the first solenoid valve (313) is opened in step S08, the first solenoid valve (313) is closed after a delay of 300 seconds; S10. After the first solenoid valve (313) is closed in step S09, a delay of 10 seconds is performed, and then the third solenoid valve (333) of the third test gas input branch (330) corresponding to the medium-concentration gas is opened; after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the medium-concentration gas and the value is stable, the third solenoid valve (333) is closed; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M14; the corresponding sample gas transmission time M114 and instrument response time M124 are written into the database for storage; S11. After the third solenoid valve (333) is closed in step S10, a delay of 10 seconds is followed, and then the first solenoid valve (313) is opened; S12. After the first solenoid valve (313) is opened in step S11, the first solenoid valve (313) is closed after a delay of 300 seconds; S13. After the first solenoid valve (313) is closed in step S12, a delay of 10 seconds is performed, and then the fourth solenoid valve (343) of the fourth test gas input branch (340) corresponding to the low-concentration gas is opened; after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the low-concentration gas and the value is stable, the fourth solenoid valve (343) is closed; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M17; the corresponding sample gas transmission time M117 and instrument response time M127 are written into the database for storage; S14. After the fourth solenoid valve (343) is closed in step S13, a delay of 10 seconds is followed, and then the first solenoid valve (313) is opened; S15. After the first solenoid valve (313) is opened in step S14, the first solenoid valve (313) is closed after a delay of 300 seconds; S16. The test gas input branch switching procedure starts with the start test switch being turned on, and the first solenoid valve (313) is opened; S17. After the first solenoid valve (313) is opened in step S16, the first solenoid valve (313) is closed after a delay of 300 seconds; S18. After the first solenoid valve (313) is closed in step S17, a delay of 10 seconds is performed, and then the second solenoid valve (323) of the second test gas input branch (320) corresponding to the high-concentration gas is opened. The second solenoid valve (323) is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen (200) exceeds 90% of the nominal input value of the high-concentration gas and the value is stable; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M12; the corresponding sample gas transmission time M112 and instrument response time M122 are written into the database for storage; S19. After the second solenoid valve (323) is closed in step S18, a delay of 10 seconds is performed, and then the first solenoid valve (313) is opened; S20. After the first solenoid valve (313) is opened in step S19, the first solenoid valve (313) is closed after a delay of 300 seconds; S21. After the first solenoid valve (313) is closed in step S20, a delay of 10 seconds is performed, and then the third solenoid valve (333) of the third test gas input branch (330) corresponding to the medium-concentration gas is opened; after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the medium-concentration gas and the value is stable, the third solenoid valve (333) is closed; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M15; the corresponding sample gas transmission time M115 and instrument response time M125 are written into the database for storage; S22. After the third solenoid valve (333) is closed in step S21, a delay of 10 seconds is followed, and then the first solenoid valve (313) is opened; S23. After the first solenoid valve (313) is opened in step S22, the first solenoid valve (313) is closed after a delay of 300 seconds; S24. After the first solenoid valve (313) is closed in step S23, a delay of 10 seconds is performed, and then the fourth solenoid valve (343) of the fourth test gas input branch (340) corresponding to the low-concentration gas is opened; after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the low-concentration gas and the value is stable, the fourth solenoid valve (343) is closed; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M18; the corresponding sample gas transmission time M118 and instrument response time M128 are written into the database for storage; S25. After the fourth solenoid valve (343) is closed in step S24, a delay of 10 seconds is followed, and then the first solenoid valve (313) is opened; S26. After the first solenoid valve (313) is opened in step S25, the first solenoid valve (313) is closed after a delay of 300 seconds; S27. The test gas input branch switching procedure starts with the start test switch being turned on, and the first solenoid valve (313) is opened; S28. After the first solenoid valve (313) is opened in step S27, the first solenoid valve (313) is closed after a delay of 300 seconds; S29. After the first solenoid valve (313) is closed in step S28, a delay of 10 seconds is performed, and then the second solenoid valve (323) of the second test gas input branch (320) corresponding to the high-concentration gas is opened. The second solenoid valve (323) is closed after the analog input signal of the test value of the component detected by the analyzer on the programmable touch screen (200) exceeds 90% of the nominal input value of the high-concentration gas and the value is stable; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M13; the corresponding sample gas transmission time M113 and instrument response time M123 are written into the database for storage; S30. After the second solenoid valve (323) is closed in step S29, a delay of 10 seconds is performed, and then the first solenoid valve (313) is opened; S31. After the first solenoid valve (313) is opened in step S30, the first solenoid valve (313) is closed after a delay of 300 seconds; S32. After the first solenoid valve (313) is closed in step S31, a delay of 10 seconds is performed, and then the third solenoid valve (333) of the third test gas input branch (330) corresponding to the medium-concentration gas is opened; the third solenoid valve (333) is closed after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the medium-concentration gas and the value is stable; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M16; the corresponding sample gas transmission time M116 and instrument response time M126 are written into the database for storage; S33. After the third solenoid valve (333) is closed in step S32, a delay of 10 seconds is applied, and then the first solenoid valve (313) is opened; S34. After the first solenoid valve (313) is opened in step S33, the first solenoid valve (313) is closed after a delay of 300 seconds; S35. After the first solenoid valve (313) is closed in step S34, a delay of 10 seconds is performed, and then the fourth solenoid valve (343) of the fourth test gas input branch (340) corresponding to the low-concentration gas is opened; after the analog input signal of the test value corresponding to the programmable touch screen (200) exceeds 90% of the nominal input value of the low-concentration gas and the value is stable, the fourth solenoid valve (343) is closed; the analog input signal data corresponding to the time period is sent to the register and recorded as analog input signal data M19; the corresponding sample gas transmission time M119 and instrument response time M129 are written into the database for storage; S36. After the fourth solenoid valve (343) is closed in step S35, a delay of 10 seconds is applied, and then the first solenoid valve (313) is opened; S37. After the first solenoid valve (313) is opened in step S36, the first solenoid valve (313) is closed after a delay of 300 seconds; S38. The test procedure ends, and the programmable touch screen (200) automatically calculates the corresponding indication error, sample gas pipeline transmission time and instrument response time according to the built-in program.

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